This Kids Count report examines statewide, countywide, and citywide trends in the well-being of Colorado's children. Following a brief foreword, the report presents state data and city data for 15 major cities in the form of a report card. The report cards relay: demographic data related to number of children by age and race; indicators of child health and well-being related to births for the period of 1991-2000 including trend changes; lists of promising trends, troubling trends, stable indicators; and general conclusions. The third section presents comparative state and city data for the period 1991-2000 for the following indicators: (1) births to single women; (2) births to single teens; (3) births to mothers with no high school diploma; (4) three-risk-factor births (mothers under 25, unmarried, with fewer that 12 years of education); (5) repeat teen births; (6) low birth weight births; (7) births to women receiving late or no prenatal care; (8) births to mothers who smoked during pregnancy; and (9) infant mortality rate. The fourth section presents county data for the year 2000 for the following indicators: (1) demographics; (2) median household income; (3) children in poverty; (4) live births; (5) births to single women; (6) low birthweight births; (7) late or no prenatal care; (8) teen birth rate; (9) three-risk-factor births; (10) infant mortality; (11) child deaths; (12) teen deaths; (13) child abuse or neglect; (14) out-of-home placement; (15) children in families enrolled in TANF; (16) children in families receiving WIC; (17) children enrolled in Medicaid; (18) children enrolled in child health plan plus; (19) children receiving free or reduced lunch; (20) high school graduation rate; and (21) high school dropout rate. The report concludes with data notes and definitions. (SD)